Pros: Free food, free phone. Nothing else, really.

Cons: Managers don't understand technologies, purely doing people management. Profit-driven, they don't care about user experience!

Pros: You can always have a chance to be involved in the development, design, and discussion of cutting-edge front-end technology. Yahoo's front-end engineers are undoubtedly the best in the world. Right now, they are also moving from PHP/C to JAVA for their back-end web services. I believe it's a very clever and correct decision. Yahoo also provides training for employees to be familiar with JAVA technologies, such as Maven, Jersey, and so on. There are also a bunch of documents, written by awesome people, waiting for you to discover.

Cons: There are still too many properties and legacy issues in the company. Because of some reasons, some properties are still using out-of-date technology and struggling to revamp it. Yahoo Mail is still struggling and faces several security problems. Not only mail, but also other properties; some security issues might not be very serious, but they are still waiting to be resolved.

Pros: Good food. Good work, if working in a good team such as Mail or Index.

Cons: No stocks, no renewal, and the salary sucks.